CN102205275A - Reinforced floatation desilicification method for high-silicon bauxite - Google Patents
Reinforced floatation desilicification method for high-silicon bauxite Download PDFInfo
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- CN102205275A CN102205275A CN2011101290332A CN201110129033A CN102205275A CN 102205275 A CN102205275 A CN 102205275A CN 2011101290332 A CN2011101290332 A CN 2011101290332A CN 201110129033 A CN201110129033 A CN 201110129033A CN 102205275 A CN102205275 A CN 102205275A
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- bauxite
- inhibitor
- collecting agent
- spray
- water
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- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 29
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 11
- 239000010703 silicon Substances 0.000 title claims abstract description 11
- 238000005188 flotation Methods 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000003112 inhibitor Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000012141 concentrate Substances 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 17
- MPPQGYCZBNURDG-UHFFFAOYSA-N 2-propionyl-6-dimethylaminonaphthalene Chemical group C1=C(N(C)C)C=CC2=CC(C(=O)CC)=CC=C21 MPPQGYCZBNURDG-UHFFFAOYSA-N 0.000 claims description 10
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 10
- 150000001412 amines Chemical group 0.000 claims description 10
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000227 grinding Methods 0.000 abstract description 2
- 230000002000 scavenging effect Effects 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 38
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 26
- 229910052500 inorganic mineral Inorganic materials 0.000 description 18
- 239000011707 mineral Substances 0.000 description 18
- 239000000377 silicon dioxide Substances 0.000 description 18
- 229910001648 diaspore Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004131 Bayer process Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 2
- 235000021321 essential mineral Nutrition 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229910001679 gibbsite Inorganic materials 0.000 description 2
- 229910052598 goethite Inorganic materials 0.000 description 2
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 229910052622 kaolinite Inorganic materials 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009866 aluminium metallurgy Methods 0.000 description 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention provides a reinforced floatation desilicification method for high-silicon bauxite, which comprises the following steps: grinding the bauxite; at room temperature, applying a collecting agent and an inhibitor; spraying water; and then performing primary rough flotation, primary fine floatation, secondary fine floatation and middle-product scavenging, wherein the products floated from a raw ore are used as tailings and the products in a groove are used as concentrate bauxite. By using the method, the floating ratios of target ores and non-target ores are increased, the non-target ores are more easily floated, the flotation index is increased, the operation is simple, the energy consumption is low and the handling capacity is large.
Description
Technical field
The present invention relates to strengthen flotation desilication method, especially relate to and from bauxite, choose siliceous gangue mineral and the reinforcement flotation desilication method of the high-silicon type bauxite of enrichment alundum (Al.
Technical background
Bauxite is the topmost ore resource of aluminum oxide industry, present 95% bauxite is used to produce aluminium oxide, and bauxite is as the aluminium metallurgy raw material, smelting process is different because of the alumina silica ratio difference, it is 8～10 that Bayer process requires the alumina silica ratio A/S of bauxite, combination method is 5.0～7.0, and the sintering rule is 3.5～5.0.The ore type of world's bauxite is broadly divided into three kinds of fundamental types such as gibbsite type, boehmite type, diaspore type by the valuable mineral composition.At present, gibbsite is mainly adopted in the production of external aluminium oxide, and typical production technology is Bayer process.And the bauxite of China is mainly based on diaspore type bauxite, the ore reserve that is suitable for Bayer process production is about 10% of gross reserves, it is that 7～10 to be about 60% alumina silica ratio with gross reserves be 4～6 bauxite that gross reserves is about 20% alumina silica ratio, can only adopt corresponding sintering process or combination method production according to the alumina silica ratio in the raw ore, thereby make the aluminum oxide industry of China lose competitiveness in the world basically.Along with the continuous development of producing, the exhaustion of high aluminium silicon ratio ore and low-sulfur bauxite mineral resources, the potential sound development that supplies the ore deposit crisis to jeopardize the whole aluminum oxide industry of China.In order to change this situation, adopt the Bayer process production technology, just must carry out pre-desiliconization to the bauxite resource of China and handle, improve the alumina silica ratio of ore, to satisfy the requirement of aluminum oxide industry to the raw material alumina silica ratio.Flotation (direct flotation or reverse flotation) desiliconization method is to study more method up to now, difference according to mineral surfaces character, realizing the separation of mineral, also is comparatively effective and economic method, significant to efficiently utilizing of promotion and acceleration bauxite resource.
Nearly 4.1 hundred million tons of Guizhou bauxite reserves, prospective reserves surpasses 600,000,000 tons, accounts for about 20% of national bauxite gross reserves, is the diaspore type bauxite of the typical high alumina of China, high silicon, low alumina silica ratio.The average alumina silica ratio of ore is 5.8～8.7, and along with the consumption of high aluminium silicon ratio bauxite resource, the development and use of low alumina-silicon ratio alumyte are imperative.The research of desiliconization mainly concentrates on the research of aspects such as screening, selective flocculation, selectivity size degradation, biological ore dressing, floatation.Though biological technique of preparing has fine development prospect, it is long that experimental study does not at present also obtain gratifying technical-economic index and cost height, cycle; Though chemical mineral processing is useful to removing of the silicon of siliceous mineral in the ore (mainly being aluminium silicate mineral), its energy consumption height, the strictness of roasting system, technology are perfect not enough; Physical upgrading is flotation especially, have that treating capacity is big, cost is low, be easy to improve alumina silica ratio, energy consumption is low, efficient, be easy to characteristics such as industrialization, it is the one preferred technique of flotation desilication, its major defect is the easy argillization of ore, cause the abominable of flotation environment, make floatation indicators low, this is the problem that bauxite flotation at first must solve.In recent years, though there is the people to begin to adopt the method for various physics and chemistry to improve the flotation environment, its effect is all not ideal.Under the situation that does not remove sludge in advance, adopt Counterfloatating desiliconization mode enrichment purpose mineral Al from low-grade bauxite of " strengthening the secondary beneficiation technologies "
2O
3Yet there are no report.
Summary of the invention
For solving problems such as the easy argillization of ore, floatation indicators are low, the invention provides a kind of reinforcement flotation desilication method of high-silicon type bauxite, enrichment Al from low-grade bauxite
2O
3, constituted a kind of method of novel processing low-grade bauxite, realize by following technical proposal.
A kind of reinforcement flotation desilication method of high-silicon type bauxite, process the following step:
With bauxite Milling, and the furnishing mass concentration is 28～38% ore pulp, adds collecting agent 150g, inhibitor 600g by former bauxite per ton at normal temperatures, and the water of spray 120L carries out one roughing; Add collecting agent 100g, inhibitor 300g by former bauxite per ton again, and the water of spray 100L carries out primary cleaning; Add collecting agent 80g, inhibitor 200g by former bauxite per ton again, and the water of spray 75L carries out recleaning; Add collecting agent 70g, inhibitor 300g by former bauxite per ton again, and the water of spray 90L is scanned chats; The product of raw ore emersion is as mine tailing, and product is a bauxite concentrate in the groove.
Described collecting agent is the dodecyl quaternary amine.
Described inhibitor is a prodan.
The present invention cooperates reinforcement secondary beneficiation technologies to carry out Counterfloatating desiliconization on the basis of conventional Counterfloatating desiliconization flow process, at the easy argillization of ore that is caused in the process of muck and ore grinding because the kind of gangue mineral does not coexist in the low alumina silica ratio ore, adopt reinforcement secondary beneficiation technologies that non-purpose mineral are reduced in the process of come-up because the come-up of the purpose mineral that the mechanical entrapment effect causes.Above flotation cell, add the shower water of some, the froth bed in the flotation cell is carried out certain " flushing " effect, foam is annexed and the secondary enrichment.During spray, partial flushing water can remain in the concentrate, but the overwhelming majority still causes the sinking in the foam tank, avoids the particulate diaspore to enter flotation area because of carrying secretly, thereby can increase purpose mineral and non-purpose mineral come-up rate, make the easier emersion of non-purpose mineral.
Effect of the present invention and advantage: with Guizhou low alumina-silicon ratio alumyte (the raw ore alumina silica ratio is 5.65) serves as to handle object, and by the small-scale test research of system, the lab scale index that is obtained is: the concentrate alumina silica ratio is 10.28, Al in the concentrate
2O
3The rate of recovery be 84.51%.This method has stronger applicability at the bauxite of same kind, can increase purpose mineral and non-purpose mineral come-up rate, makes the easier emersion of non-purpose mineral; Simple to operate, energy consumption is low, treating capacity is big.Thereby no matter the present invention is from technological process itself or from the technical-economic index by its acquisition; its novelty, practicality and advance have all been proved; the processing and utilization that the bauxite resource of alumina silica ratios is hanged down in other areas of China also has extraordinary drive and exemplary; given up recent decades in past because the abominable adverse effect of reverse flotation environment; this method has better operability and economy, is easy to realize industrialization and large-scale production.
The specific embodiment
Embodiment 1
The raw ore alumina silica ratio is 5.65, and the essential mineral in the raw ore is formed and comprised: diaspore contains endellite, kaolinite, quartz, goethite, anatase, pyrite.
With 1 ton of bauxite Milling, and the furnishing mass concentration is 28% ore pulp, adds collecting agent dodecyl quaternary amine 150g, inhibitor prodan 600g at normal temperatures, and the water of spray 120L carries out one roughing; Add collecting agent dodecyl quaternary amine 100g, inhibitor prodan 300g again, and the water of spray 100L carries out primary cleaning; Add collecting agent dodecyl quaternary amine 80g, inhibitor prodan 200g again, and the water of spray 75L carries out recleaning; Add collecting agent dodecyl quaternary amine 70g, inhibitor prodan 300g again, and the water of spray 90L is scanned chats; The product of raw ore emersion is as mine tailing, and product is a bauxite concentrate in the groove.Its grade Al
2O
3Be 64.55%, SiO
2Content is 6.28%, and the alumina silica ratio of concentrate is 10.28, Al in the concentrate
2O
3The rate of recovery be 85.41%.
Embodiment 2
The raw ore alumina silica ratio is 5.65, and the essential mineral in the raw ore is formed and comprised: diaspore contains endellite, kaolinite, quartz, goethite, anatase, pyrite.
With 1 ton of bauxite Milling, and the furnishing mass concentration is 38% ore pulp, adds collecting agent dodecyl quaternary amine 150g, inhibitor prodan 600g at normal temperatures, and the water of spray 120L carries out one roughing; Add collecting agent dodecyl quaternary amine 100g, inhibitor prodan 300g again, and the water of spray 100L carries out primary cleaning; Add collecting agent dodecyl quaternary amine 80g, inhibitor prodan 200g again, and the water of spray 75L carries out recleaning; Add collecting agent dodecyl quaternary amine 70g, inhibitor prodan 300g again, and the water of spray 90L is scanned chats; The product of raw ore emersion is as mine tailing, and product is a bauxite concentrate in the groove.Its grade Al
2O
3Be 63.27%, SiO
2Content is 6.32%, and the alumina silica ratio of concentrate is 10.01, Al in the concentrate
2O
3The rate of recovery be 81.69%.
Claims (3)
1. the reinforcement flotation desilication method of a high-silicon type bauxite is characterized in that through the following step:
With bauxite Milling, and the furnishing mass concentration is 28～38% ore pulp, adds collecting agent 150g, inhibitor 600g by former bauxite per ton at normal temperatures, and the water of spray 120L carries out one roughing; Add collecting agent 100g, inhibitor 300g by former bauxite per ton again, and the water of spray 100L carries out primary cleaning; Add collecting agent 80g, inhibitor 200g by former bauxite per ton again, and the water of spray 75L carries out recleaning; Add collecting agent 70g, inhibitor 300g by former bauxite per ton again, and the water of spray 90L is scanned chats; The product of raw ore emersion is as mine tailing, and product is a bauxite concentrate in the groove.
2. method according to claim 1 is characterized in that: described collecting agent is the dodecyl quaternary amine.
3. method according to claim 1 is characterized in that: described inhibitor is a prodan.
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| CN2011101290332A CN102205275A (en) | 2011-05-18 | 2011-05-18 | Reinforced floatation desilicification method for high-silicon bauxite |
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| CN2011101290332A CN102205275A (en) | 2011-05-18 | 2011-05-18 | Reinforced floatation desilicification method for high-silicon bauxite |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234006A (en) * | 2015-09-17 | 2016-01-13 | 中国铝业股份有限公司 | Method for synchronous floatation, desulfuration and desilicication of high-sulfur bauxite |
| CN105344463A (en) * | 2015-11-25 | 2016-02-24 | 昆明冶金研究院 | Method for sorting bauxite with medium-low alumina-silica ratio |
| CN109909056A (en) * | 2019-02-21 | 2019-06-21 | 中国地质科学院矿产综合利用研究所 | Flotation process for complex refractory sulphide ore associated with silicon/aluminum |
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| CN1370625A (en) * | 2001-02-23 | 2002-09-25 | 中南大学 | Counterfloatating desiliconization process for diaspore type bauxite |
| CN1429662A (en) * | 2001-12-29 | 2003-07-16 | 中南大学 | Flotation column suitable for reverse flotation desilication of bauxite |
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| CN101757986A (en) * | 2009-12-18 | 2010-06-30 | 中国铝业股份有限公司 | Method for floating bauxite |
-
2011
- 2011-05-18 CN CN2011101290332A patent/CN102205275A/en active Pending
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| Title |
|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234006A (en) * | 2015-09-17 | 2016-01-13 | 中国铝业股份有限公司 | Method for synchronous floatation, desulfuration and desilicication of high-sulfur bauxite |
| CN105234006B (en) * | 2015-09-17 | 2018-02-02 | 中国铝业股份有限公司 | A kind of method of high-sulfur bauxite synchronization floatation desulphurization desiliconization |
| CN105344463A (en) * | 2015-11-25 | 2016-02-24 | 昆明冶金研究院 | Method for sorting bauxite with medium-low alumina-silica ratio |
| CN105344463B (en) * | 2015-11-25 | 2018-07-13 | 昆明冶金研究院 | One kind selecting method for distinguishing for middle low alumina-silicon ratio alumyte |
| CN109909056A (en) * | 2019-02-21 | 2019-06-21 | 中国地质科学院矿产综合利用研究所 | Flotation process for complex refractory sulphide ore associated with silicon/aluminum |
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Application publication date: 20111005 |